I am trying to get started with my tuning learning curve but off to a slow start. I have a 94 k1500, 5.7, 7427 ECM and a $0D mask. I'm not sure which bin file to use as there are many variations to choose from so I thought I would read my existing chip and save that bin as my starting point. But, I have a couple of other questions to figure out before I can get started...

1) How do I determine the correct .adx file for my application. On Tuner Pro and this forum I've found 3 I think may be correct, just not sure... A217 $0D TP5 V250, A218 TRANS1 $0D V250 or A218 TRANS2 $0D TPS V250.

2) Not sure why but everything I try to view , even excel files, open up as .php files. I downloaded NOTEPAD++ but the files open up incorrectly and can't be read. Any suggestions?

Thanks.